import { Iau2000Orientation } from '../../Source/Cesium.js';
import { JulianDate } from '../../Source/Cesium.js';
import { TimeStandard } from '../../Source/Cesium.js';

describe('Core/Iau2000Orientation', function() {

    it('compute moon', function() {
        var date = new JulianDate(2451545.0, -32.184, TimeStandard.TAI);
        var param = Iau2000Orientation.ComputeMoon(date);

        // expected results taken from STK Components:
        //    Iau2000Orientation.ComputeMoon(TimeConstants.J2000);
        var expectedRightAscension = 4.6575460830237914;
        var expectedDeclination = 1.1456533675897986;
        var expectedRotation = 0.71899299269222972;
        var expectedRotationRate = 0.0000026518066425764541;

        expect(param.rightAscension).toEqual(expectedRightAscension);
        expect(param.declination).toEqual(expectedDeclination);
        expect(param.rotation).toEqual(expectedRotation);
        expect(param.rotationRate).toEqual(expectedRotationRate);
    });
});
